Lifting-jack.



PATENTED MAR. 17, 1908.

I. J. KEELERQ LIFTING JACK. APPLICATION FILED AUG. 26, 1907.

- 7;. awucmto v wi tmaowo i To allwhom" may "concern:

IRA JAMES KEnLEnoi CAMERON, MISSOURI.

I 3 e'i't knownthatL'I'RA JAMES KnELER, a citizen of theUnited States, residing at Cameron,,1n the county of (llinton and State of Missouri; have invented a new and useful Liftmg Ja'ck, of' which the followingis a specification.

The inventionrelates to improvements in .lifting' jacks;

The ob'ect of the'present invention is to improve t e' construction of lifting jacks, and to provide a simple, inexpensive and efficient one of great strength anddurabilit'y, designed for use'on allki'n'ds of vehicles, and capableof being easily 0 erated without stooping or assuming any ot er cramped po-' sition.

.- With these and other objects inview, the

invention consists in the construction and.

novel combination of parts hereinafter fully described,illustrated in the accompanying drawing, and ointed out in the claims hereto appended; it eing understood that various 0 anges in [the form, proportion, size and minor details of. construction, within the scope of the claims, may be resorted to without departing from the spirit 'or sacrificing an of the advantages of the invention.

n the drawing :'Figure 1 is a erspectilve view of a lifting jack, constructed ance with this invention. Fig. 2 is an enlarged detail sectional view of the upper portion of the lifting jack. Fig. 3 is a detail view, illustrating the manner of mounting the camlever.

Like numerals of reference designate corre v spending parts in all the figures of the drawmg. 1 designates a standard, consisting of a flat bar of metal, centrally bent to rovide two spaced sides or portions and to orm'an intervening slot or opening 2. The spaced sides are connected at the top of the standard by a bend 3, and the lower terminals 4 of the sides are bent outward at right angles and are secured-by rivets, or other suitable fastening devices to a base 5. The base 5 which connects the lower ends of the sides of the standard, consists preferably of a thin metallic late",,but the parts of the lifting jack are esigned to be constructed of a size character of the vehic and strengthto adapt the device to the e to .be lifted. The standard'forms a guide for a dog or clutch 6 consisting of a metallic plategory piece, spli t or bent at the fr'ontedges of the I Specification of Letters Patent. Application filed Augult as, 1907. Serial No. 390,185.

'ment.

upper portion with an opening 10. in which in accord- LIFTING-LTACK.

Patented liarch 17, 1908.

sides'of the standard andbent laterally in opposite directions to form lugs 7. The dog or clutch 6 is provided at its lower rear portion with an inclined laterally projecting tooth 8, tapered downwardly and arranged to engage a ratchet' consisting of teeth located at the rear edge of one of the sides of the standard and shouldered at their upper edges. In practice a light ratchet formed by comparatively small recesses will be sufficient to hold the dog or clutch at any adjust- The dog or clutch-is provided at its is hnked a ring 11, forming a combined guide and hold. The ring is adaptedvto engage the rearledges of the sides 0 the standard to limit the forward movement of the upper portion of the dog or clutch, and'it forms a convenient means to be grasped by the operator for enabling the. dog or-clutch to be readily lifted to arrange the same at the desiredv elevation. 'The dog or clutch is also provided at its upper portion with a rearwardly extending car 12 to which is pivoted a pair of-dependmg links 13, and the latter form a su port or hanger for a lifting lever 14. The ifting lever'l i, which is pivoted between the lower. ends of the links 13 by a rivet 15, or other suitable fastening device, extends throughthe opening between the sides of the standard, and has an upwardly curved engaging end .16. The links 13 are connected with the lever at a point adjacent to the engaging ortion 16, and the downward swinging of the rear arm of the lever moves the enga g arm 16 upwardly, which will raise the ai ia and one of the wheels of a "vehicle clearof the ground,

- The lifting lever isheld in en agement with an axle by means of. a cam lever l7, pivoted between the sides of an a proximately U-shaped cuff or slide 1-8, which embraces and slides on the rear arm of the lift-- ing lever. The transverse connecting portion or bend of the cuff or slide 18 rests upon the up er edge of the lifting lever, and the sides 0 the said cuff or slide extend below the lower edge of the lifting lever and are ierced by a rivet 19, or other suitable astening device for pivoting the cam lever to the cuff or slide The cam lever is provided at its upper end with a rounded en gaging edge 20 yits lower portion 21 is shaped into a handle, and it is provided at an intermediate point with an eye 22, located at a point below the pivot of the cam lever and The chain 12% is secured at its lower end to above a position at right he released the lower portion of the standard by means of a plate or piece 24, having an eye 25,

which is linked into the lower end of the chain.

When the chain is placed under tension, it antonmtically swings the cam lever into etigagement with the lifting lever. The engaging edge of the eanrlever is arranged eeeentrit-allv with the ivot, and it is adapted to clamp the etrll' firmly in its adjustn'tentv on the lifting lever. The plate or piece set-t1redhetween the sides of the standard by means of a rivet 26, orother suitable fastening device.

'lo lift a vehicle wheel clear of the ground, move the slide or cull to the inner end of the long or inner arm of the lifting lever; then raise the rear arm of the lifting lever slightly angles to the standard and with the ringraise the clutch and lever until the point or engaging end of the lever comes in contact with. the bottom of the axle. lhen swing the rear arm of the lever dmvnwardlv to lift the axle and slide the cuff outwardly on the rear arm of the lifting lever. The lifting lever inay then and the tension on the chain will automatically engage the cam lever with the lifting lever and hold the slide or cull against inward movement.

The rear end of the lifting into a handle or gri which is cotnparativefy light in \V6lght,'1S adapted to be either manufactured or repairedby an ordinary blacksmith.

lever is shaped Having thus fully described my invention, what I clann as new and desire to secure by Letters Patent, is

1. A lifting jack comprising a slotted standard, a vertically movable clutch slidahle in. the slot of the standard and provided with means for engaging the same, a lifting lever passing through the standard and having an engaging end, a link connecting the lever with the clutch, and means for holding the lever.

2. A lifting jack comprising a standard having spaced sides forming an opening, said standard being also provided with a ratchet, a clutch slidahle in thespace between the sides of the standard and provided with a The lifting ja cl i',

tooth for engaging the said ratchet, awlevel connected at an intern'iediate point with and carried by the clutch. andrneans for holding the lever.

3. A lifting jack comprising a' having spaeed sides and providedwith a ratchet, a clutch operating in the space-between the sides of the standard and provided with a tooth for engaging the said ratchet, said chiteh heing alsoprovided with oppositely disposed lugs, a ring mounted on the clutch and spaced from the standard, which is located hetween the ring and thelugs, and a lifting lever carried by the clutch.

4. lifting jaclccomprisinq a standard having a vertical opening,a clutch in the opening and provided with means for engaging the standard, a lever extending through the opening of the standard, and an oscillatory link connecting the lever With the clutch.

5. 'A lifting jack comprising a standard, a. lifting lever, means for fulcrnming the lifting lever. a slide mounted on the lifting lever, a

sli'dable standard.

cam lever carried by the slide and arranged to lever, a cam lever carried by the slide and.

arranged to engage the lifting lever, and a -ilexible connection extending from the cam lever to the standard and arranged to automaticallyswmg the former into engagement .with the lifting lever when the said flexible connection is subjected to. strain.

7,. A lifting jack comprising a standard, a lifting lever, a slide mounted on the lifting lever, a cam lever pivoted atan intermediate point to the in the'presence of two witnesses.

IRA- J. KEELER.

Witnesses ADA flA'NSOM, J. H. Bo'r'rttoFF v foregoing asm v own, I have hereto affixed .my signature slide and having an upper portion and a lower handle portion, and a flexi- 

